Alexander, R. M. (1975). The chordates. C.U.P..
Cita Chicago (17th ed.)Alexander, R. McNeill. The Chordates. London: C.U.P., 1975.
Cita MLA (9th ed.)Alexander, R. McNeill. The Chordates. C.U.P., 1975.
Atenció: Aquestes cites poden no estar 100% correctes.